Patents by Inventor Shinichi Iwano
Shinichi Iwano has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7824109Abstract: An optical connector comprising: first and second movable members 7, 8 held on an optical connector body 6 to be axially movable in a longitudinal direction; locking means for locking the first and second movable members when the first movable member is located at a predetermined locking position in a tip part of the optical connector body, and integrally moving the first and second movable members; and unlocking means formed in the optical connector body 6, and including a locking acting portion which acts on the locking means when the first movable member is located rearwardly of a predetermined unlocking position in a rear part of the optical connector body, to unlock the first and second movable members, and which locks the first and second movable members when the first movable member is located forwardly of the unlocking position, and a second movable member hooking portion 10 for inhibiting rearward movement of the second movable member after the first and second movable members are unlocked, and whereType: GrantFiled: August 30, 2006Date of Patent: November 2, 2010Assignees: Nippon Telegraph and Telephone Corporation, NTT Advanced Technology CorporationInventors: Hiroshi Tanaka, Mitsuo Kama, Hiroshi Aoyama, Yasuo Oda, Ryo Nagase, Hideki Ishihara, Fumihiro Ashiya, Shinichi Iwano
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Publication number: 20080273842Abstract: An optical connector comprising: first and second movable members 7, 8 held on an optical connector body 6 to be axially movable in a longitudinal direction; locking means for locking the first and second movable members when the first movable member is located at a predetermined locking position in a tip part of the optical connector body, and integrally moving the first and second movable members; and unlocking means formed in the optical connector body 6, and including a locking acting portion which acts on the locking means when the first movable member is located rearwardly of a predetermined unlocking position in a rear part of the optical connector body, to unlock the first and second movable members, and which locks the first and second movable members when the first movable member is located forwardly of the unlocking position, and a second movable member hooking portion 10 for inhibiting rearward movement of the second movable member after the first and second movable members are unlocked, and whereType: ApplicationFiled: August 30, 2006Publication date: November 6, 2008Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, NTT ADVANCED TECHNOLOGY CORPORATIONInventors: Hiroshi Tanaka, Mitsuo Kama, Hiroshi Aoyama, Yasuo Oda, Ryo Nagase, Hideki Ishihara, Fumihiro Ashiya, Shinichi Iwano
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Publication number: 20070137255Abstract: A method of manufacturing an incorporated ferrule (13) with attenuation optical fiber comprising the step of cutting off a long capillary with an attenuation optical fiber (6) into a plurality of short capillaries (12) with attenuation optical fiber of specified lengths, and polishing the end faces (12a) and (12b) of the short capillaries (12) with attenuation optical fiber.Type: ApplicationFiled: January 28, 2003Publication date: June 21, 2007Inventors: Taisei Miyake, Susumu Ohneda, Keiko Shiraishi, Hirckazu Takeuchi, Nobuo Funabiki, Ryo Nagase, Shuichi Yanagi, Shinichi Iwano
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Patent number: 6913394Abstract: An optical connector plug has a front housing 1, a rear housing 2, a ferrule 3, a coil spring 4 and an optical cord fixing member 5, and in addition to the ferrule 3 and the coil spring 4, the optical cord fixing member 5 for fixing a tension resistive member and a cord outer jacket is received and held within an internal through space defined when the front housing 1 and the rear housing 2 are coupled. Also, upon assembling the optical connector plug, assembling of these members 1 to 5 can be realized by movement in an axial direction as much as possible. Accordingly, assembling of the optical connector plug is facilitated and suitable for automatic assembling.Type: GrantFiled: November 29, 2001Date of Patent: July 5, 2005Assignee: Nippon Telegraph and Telephone CorporationInventors: Shinichi Iwano, Shin Sumida, Shuichi Yanagi
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Patent number: 6565261Abstract: An optical fiber connector has a stop ring having an end portion having an outer periphery and an optical fiber cable having a strength member extending from an end thereof. An adhesive material is disposed over the end portions of the stop ring and the optical fiber cable so that at least a portion of the strength member of the optical fiber cable is embedded in the adhesive material. A heat-shrinkable tube has an inner surface and is disposed on the adhesive material so that the portion of the strength member is disposed between the inner surface of the heat-shrinkable tube and the outer periphery of the stop ring.Type: GrantFiled: February 22, 2000Date of Patent: May 20, 2003Assignees: Seiko Instruments Inc., Nippon Telegraph and Telephone CorporationInventors: Takeshi Uchiyama, Tomohiro Shimada, Masahiro Nakajima, Shinichi Iwano, Shin Sumida
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Publication number: 20020090179Abstract: An optical connector plug has a front housing 1, a rear housing 2, a ferrule 3, a coil spring 4 and an optical cord fixing member 5, and in addition to the ferrule 3 and the coil spring 4, the optical cord fixing member 5 for fixing a tension resistive member and a cord outer jacket is received and held within an internal through space defined when the front housing 1 and the rear housing 2 are coupled. Also, upon assembling the optical connector plug, assembling of these members 1 to 5 can be realized by movement in an axial direction as much as possible. Accordingly, assembling of the optical connector plug is facilitated and suitable for automatic assembling.Type: ApplicationFiled: November 29, 2001Publication date: July 11, 2002Inventors: Shinichi Iwano, Shin Sumida, Shuichi Yanagi
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Patent number: 5404416Abstract: To provide an optical connector which can slidably and stably support the optical connector element (ferrule) within the connector housing without increasing the axial length of the ferrule, the optical connector plug comprising: (a) a plug housing (202) formed with a shoulder portion (253) between a large hollow portion (254) and a small hollow portion (252) and formed with no projection between said two portions; (b) a plug ferrule (201) connected to an optical fiber (204) and formed with a flange portion (201b) slidably fitted into the large hollow portion of said plug housing and an end portion (201a) passed through the small hollow portion of said plug housing; and (c) a spring (203) housed within said plug housing to urge the flange portion of said plug ferrule against the shoulder portion (253) of said plug housing.Type: GrantFiled: February 24, 1993Date of Patent: April 4, 1995Assignee: Nippon Telegraph & Telephone CorporationInventors: Shinichi Iwano, Ryo Nagase, Kazunori Kanayama, Etsuji Sugita, Yasuhiro Ando
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Patent number: 5220703Abstract: To microscopically clean the ferrule end surface of an optical connector simply, uniformly and securely, the optical connector cleaner comprises a cleaning cloth woven with ultrafine fiber less than 0.1 denier; a casing formed with at least one opening for protecting the cleaning cloth from dust; and a mechanism for shifting the cleaning cloth exposed in the opening for cloth renewing, after the ferrule end surface has been rubbed with the cleaning cloth for cleaning. Further, it is preferable to provide an elastic member under the cleaning cloth for applying a constant cleaning pressure against the cloth and a guide member over the cleaning cloth for securely cleaning the ferrule end surface. The cloth shift mechanism is operated manually by the user or automatically by a motor. A holder jig holds the optical connector to facilitate cleaning of the ferrule end surface. The holder jig supports the optical connector such that the ferrule projects from the holder jig.Type: GrantFiled: March 20, 1992Date of Patent: June 22, 1993Assignee: Nippon Telegraph & Telephone Co.Inventors: Kazunori Kanayama, Etsuji Sugita, Ryo Nagase, Shinichi Iwano
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Patent number: 5117528Abstract: To microscopically clean the ferrule end surface of an optical connector simply, uniformly and securely, the optical connector cleaner comprises a cleaning cloth woven with ultrafine fiber less than 0.1 denier; a casing formed with at least one opening for protecting the cleaning cloth from dust; and a mechanism for shifting the cleaning cloth exposed in the opening for cloth renewing, after the ferrule end surface has been rubbed with the cleaning cloth for cleaning. Further, it is preferable to provide an elastic member under the cleaning cloth for applying a constant cleaning pressure against the cloth and a guide member over the cleaning cloth for securely cleaning the ferrule end surface. The cloth shift mechanism is operated manually by the user or automatically by a motor.Type: GrantFiled: March 15, 1990Date of Patent: June 2, 1992Assignee: Nippon Telegraph and Telephone CorporationInventors: Kazunori Kanayama, Etsuji Sugita, Ryou Nagase, Shinichi Iwano
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Patent number: 4895425Abstract: In a plug-in connector for connecting elements mounted on a backage board to other elements arranged on a back wiring board disposed perpendicular to the package board, the guide pin and the connector housing fixing screw are formed integral with each other to realize a floating connector coupling structure which is high in mounting efficiency and precision and small in size. Further, the plug-in connector can connect two different, optical and electrical connectors. Further, there is disclosed a novel optical connector plug whose radial eccentricity direction can be matched with that of a mated optical connector jack with an optical fiber aligning jig to minimize the optical fiber coupling power loss.Type: GrantFiled: February 24, 1989Date of Patent: January 23, 1990Assignee: Nippon Telegraph and Telephone CorporationInventors: Shinichi Iwano, Etsuji Sugita, Ryo Nagase, Kazunori Kanayama, Kenichi Nakano, Yasuhiro Ando
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Patent number: 4818061Abstract: This invention ferrule which covers an end of an optical fiber is structured to have a larger elastic displacement compared to ordinary ones.And misalignment at coupling is absorbed, thereby reducing a coupling loss as well as sliding force at the coupling.Type: GrantFiled: April 4, 1986Date of Patent: April 4, 1989Assignee: Nippon Telegraph and Telephone CorporationInventors: Shinichi Iwano, Yasuhiro Ando